- ▸ Coupling agent: Bonds glass, fillers, and metals to organic polymers.
- ▸ Adhesion promoter: Improves adhesive and sealant bonding to substrates.
- ▸ Foundry resins: Strength and moisture resistance in foundry binders.
- ▸ Fiberglass sizing: Glass-fiber surface treatment for laminates.
- ▸ Coatings: Adhesion and crosslinking additive.
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →3-(2-Aminoethylamino)propyltrimethoxysilane (CAS 1760-24-3), or DAMO, is a diamino-functional organosilane. It works as a coupling agent, adhesion promoter, and crosslinker, bonding inorganic substrates to organic resins in fiberglass sizing, adhesives, sealants, foundry resins, and coatings.
Frequently Asked Questions
What is 3-(2-aminoethylamino)propyltrimethoxysilane (DAMO) used for?
DAMO (CAS 1760-24-3, C8H22N2O3Si) is a diamino-functional organosilane used as a coupling agent, adhesion promoter, and crosslinker. It bonds inorganic substrates to organic resins in fiberglass sizing, adhesives, sealants, foundry resins, and coatings. RawSource supplies it in bulk to formulators and compounders.
How does DAMO work as a coupling agent?
Its trimethoxysilyl group hydrolyzes and bonds to inorganic surfaces such as glass, fillers, and metals, while its diamino organic group reacts with or anchors organic resins, creating a durable interfacial bond. The two amine groups give it higher reactivity than mono-amino silanes in many systems.
Is DAMO the same as a mono-amino silane like APTES or APTMS?
No. DAMO (CAS 1760-24-3) is a diamino silane carrying an additional aminoethyl group, whereas APTES and APTMS are mono-amino propylsilanes with different CAS numbers and reactivity. Confirm identity by CAS number on the CoA when specifying a silane.
What CAS number and HS code apply to DAMO?
The CAS number is 1760-24-3. It classifies under HS 2931.90 (organo-inorganic compounds, other). As a trimethoxysilane it is moisture-sensitive; confirm packaging and the destination tariff line when ordering.
How is bulk DAMO supplied and quoted?
RawSource supplies DAMO in industrial bulk packaging (drums, totes, and IBCs) to manufacturers. Pricing is volume-dependent, so request a bulk quote with your target quantity and grade requirement; CoA and SDS accompany each shipment.